CN103317296A - Engine connection rod remanufacturing method - Google Patents
Engine connection rod remanufacturing method Download PDFInfo
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- CN103317296A CN103317296A CN2013102257487A CN201310225748A CN103317296A CN 103317296 A CN103317296 A CN 103317296A CN 2013102257487 A CN2013102257487 A CN 2013102257487A CN 201310225748 A CN201310225748 A CN 201310225748A CN 103317296 A CN103317296 A CN 103317296A
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- connection rod
- connecting rod
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- engine
- tooth
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Abstract
The invention discloses an engine connection rod remanufacturing method and belongs to the technical field of engine remanufacture. The method includes maintaining defects on the tooth-shaped surfaces of a connection rod body and a connection rod cover, removing a machining quantity of an original tooth shape with the original tooth shape as the reference, utilizing a connection rod bolt to assemble the connection rod body and the connection rod cover which are subjected to tooth shape maintaining, replacing a small-end-hole bush, boring the bush in a small end hole and a large end hole of the connection rod, disassembling the connection rod bolt, cutting a plane on the connection rod cover in contact with the head of the connection rod bolt, cleaning the connection rod body and the connection rod cover to remove scrap iron and grease on the surface and in the holes, utilizing another connection rod bolt to assemble the cleaned connection rod body and the cleaned connection rod cover according to a pairing mark and weighing and grouping the assembled connection rod. By means of the method, the original product accuracy of the connection rod is recovered, reliable work of the connection rod can be ensured, and remanufacture of the old engine connection rod is achieved.
Description
Technical field
The invention belongs to the engine remanufacturing technical field, relate in particular to a kind of reproducing method of engine profile of tooth connecting rod.
Background technology
Making is a kind of industry of waste product being implemented high-tech reparation and transformation again, its for be the parts that damage or be about to scrap, on the basis that performance failure analysis, life appraisal etc. are analyzed, carry out again the manufacturing engineering design, adopt recovery technique, with workpiece shape and accuracy resumption, make the quality that manufactures a product again meet or exceed new product.
Engine remanufacturing both had been different from general engine manufacturing, also non-common engine overhaul, but a brand-new maintenance mode.To be the engine that will enter certain life cycle revert to the process of new machine according to manufacturing process again to engine remanufacturing.
Engine link is one of important spare part of engine, also is to hold one of flimsy key components and parts, and learies and demand are much larger than engine on the market.But the engine link required precision is high, the off-gage phenomenon of the relevant significant dimensions parameters such as connecting rod ubiquity big end hole, microcephaly hole, centre-to-centre spacing and the depth of parallelism under changing from engine, the flexural deformation and the torsional deformation that also have simultaneously shaft, and technological datum destroys, the reparation difficulty is large, engine link create again the technical barrier of realizing that engine remanufacturing need to be broken through.
At present, the reproducing method of existing engine profile of tooth connecting rod mainly contains following two kinds:
First method is utilized the distortion of pressure straightening bending with sizing and torsional deformation, changes small end bushing, and boring processing is carried out in the microcephaly hole; Though flexural deformation and the torsional deformation of the temporary transient correction coupler shaft of energy behind the pressure straightening, but because of shaft internal memory after the alignment at stress, be difficult to eliminate, the risk that has connecting rod cracking in the use afterwards, and big end hole is not repaired, connecting rod after making so again can not recover the original product precision, and seriously reduce service life;
Second method adopts carries out honing after the brush plating to big end hole, the microcephaly hole is carried out lining is changed and processing; Repair the big end hole size in the brush plating mode, be subject to the adhesion of brushing coating and con-rod only, in the connecting rod course of work, under the effect of alternate stress, brushing coating easily comes off and causes connecting rod to damage, even causes engine to be scrapped.
Summary of the invention
Technical problem to be solved by this invention is: the reproducing method that a kind of engine link is provided, the off-gage phenomenon that has relevant significant dimensions parameter with the profile of tooth connecting rod under the replacing of solution engine also exists the flexural deformation of shaft and torsional deformation to cause the large technical problem of reparation difficulty simultaneously.
For solving the problems of the technologies described above, technical scheme of the present invention is: the reproducing method of engine link may further comprise the steps:
(1) uses respectively defective on dressing tool finishing gonnecting rod body and the connecting rod cap toothed surfaces;
(2) take original profile of tooth as benchmark, remove a processing capacity in original profile of tooth;
(3) gonnecting rod body and the connecting rod cap that will finish the profile of tooth reparation with connecting-rod bolts are assembled together;
(4) the microcephaly hole lining with described connecting rod takes out, described microcephaly hole bottom outlet is carried out deburring, cleaning after, another lining is packed in the described microcephaly hole;
(5) boring processing is carried out in the big end hole of the lining in the described microcephaly hole and described connecting rod;
(6) described connecting-rod bolts are pulled down;
(7) to described connecting rod cap that the head of described connecting-rod bolts contacts on the plane carry out machining;
(8) clean described gonnecting rod body and described connecting rod cap, remove surface and iron filings inside holes and greasy dirt;
(9) will clean complete described gonnecting rod body and described connecting rod cap assembles with another connecting-rod bolts by the pairing mark;
(10) connecting rod that assembles is weighed at weighing instrument, carry out packet marking by the grouping standard.
As a kind of improvement, after step (5), the big end hole of described connecting rod is carried out honing.
As a kind of improvement, in step (1), described dressing tool comprises oilstone or file.
As a kind of improvement, in step (2), adopt milling or broaching to remove a processing capacity on original profile of tooth.
As a kind of improvement, in step (5), adopt the twin shaft fine boring machine that the lining in the described microcephaly hole and the big end hole of described connecting rod are processed simultaneously.
As a kind of improvement, in step (5), adopt jig boring machine respectively the lining in the described microcephaly hole and the big end hole of described connecting rod to be processed.
As further improvement, in step (7), described machining comprises boring or drilling.
After having adopted technique scheme, the invention has the beneficial effects as follows:
1, in step (2), because the processing capacity of removing is very little, maximum is controlled at about 0.3mm, and is almost without affecting, very little on the impact in service life on the bulk strength of connecting rod and performance;
2, in step (2), after gonnecting rod body and connecting rod cap tooth Profile Machining, in step (3), gonnecting rod body and the connecting rod cap that to finish the profile of tooth reparation with connecting-rod bolts are assembled together, this moment, the big end hole shape of connecting rod became approximate ellipsoidal, in step (5), big end hole to described connecting rod carries out boring processing, adopt after the shrinkage cavity again boring to recover the repair mode of big end hole precision, because after the big end hole dimensional accuracy is recovered, what expose in the big end hole is the connecting rod material body, possesses precision and the performance of new product, therefore can guarantee its reliability;
3, in step (5), big end hole to the lining in the described microcephaly hole and described connecting rod carries out boring processing, in the microcephaly hole relative dimensions precision of the big end hole that recovers described connecting rod and described connecting rod, also flexural deformation and the torsional deformation of connecting rod shank are revised, because connecting rod shank is under the state that is not subjected to external force deformation (nature), revise flexural deformation and the torsional deformation of connecting rod shank by the mode in processing big end hole and microcephaly hole, makeover process does not produce stress, thereby eliminated the risk that pressure correction brings, guaranteed to repair the reliability of back link;
4, another lining reprocessing is changed in the microcephaly hole, can recover the dimensional accuracy in microcephaly hole fully, makes the microcephaly hole recover required precision and the performance of new product;
5, crank pin end pore and microcephaly hole are all processed reparation, the centre-to-centre spacing that can fully guarantee crank pin end pore and the microcephaly hole capable degree requirement of will demanding for peace;
6, to device surface (namely with described connecting rod cap that the head of described connecting-rod bolts contacts on the plane) processing, repaired because of connecting-rod bolts repeatedly closing the destruction that device surface is caused, guaranteed that connecting rod is reliability and the accuracy of tight moment.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The reproducing method of engine link may further comprise the steps:
(1) use respectively defective on dressing tool finishing gonnecting rod body and the connecting rod cap toothed surfaces, this dressing tool comprises oilstone, file etc., and this defective comprises collide with high point, the burr etc. on the profile of tooth;
(2) take original profile of tooth as benchmark, adopt the processing modes such as milling or broaching, remove a processing capacity in original profile of tooth, thereby repair the defectives such as colliding with on the profile of tooth, wearing and tearing, and be the follow-up rational allowance of big end hole processing reservation;
(3) gonnecting rod body and the connecting rod cap that will finish the profile of tooth reparation with connecting-rod bolts are assembled together;
(4) on forcing press, the microcephaly hole lining of this connecting rod is taken out, this microcephaly hole bottom outlet is carried out deburring, cleaning after, with another lining in forcing press is pressed into this microcephaly hole;
(5) adopt the twin shaft fine boring machine that the big end hole of the lining in this microcephaly hole and this connecting rod is processed simultaneously or adopt jig boring machine respectively the big end hole of the lining in this microcephaly hole and this connecting rod to be processed, recover the relative dimensions precision in this crank pin end pore and microcephaly hole and centre-to-centre spacing, the depth of parallelism etc.;
(6) adopt the instruments such as pneumtic impact wrench, torque wrench or tightening machine that these connecting-rod bolts are pulled down;
(7) device surface is carried out machining, the plane on this connecting rod cap that this device surface is with the head of these connecting-rod bolts contacts, described machining comprises boring or drilling etc., the roughness requirement of recovery device face;
(8) clean this gonnecting rod body and this connecting rod cap, remove surface and iron filings inside holes and greasy dirt;
(9) will clean this complete gonnecting rod body and this connecting rod cap assembles with another connecting-rod bolts by the pairing mark;
(10) connecting rod that assembles is weighed at weighing instrument, carry out packet marking by the grouping standard.
In order to improve the roughness of this big end hole, after step (5), the big end hole of this connecting rod is carried out honing.
Embodiment one:
The reproducing method of engine link may further comprise the steps:
(1) use respectively defective on oilstone finishing gonnecting rod body and the connecting rod cap toothed surfaces, this defective comprises collide with high point, the burr etc. on the profile of tooth;
(2) take original profile of tooth as benchmark, adopt the Milling Process mode, remove a processing capacity in original profile of tooth, thereby repair the defectives such as colliding with on the profile of tooth, wearing and tearing, and be the follow-up rational allowance of big end hole processing reservation;
(3) gonnecting rod body and the connecting rod cap that will finish the profile of tooth reparation with connecting-rod bolts are assembled together;
(4) on forcing press, the microcephaly hole lining of this connecting rod is taken out, this microcephaly hole bottom outlet is carried out deburring, cleaning after, with another lining in forcing press is pressed into this microcephaly hole;
(5) adopt the twin shaft fine boring machine that the big end hole of the lining in this microcephaly hole and this connecting rod is processed simultaneously, recover the relative dimensions precision in this crank pin end pore and microcephaly hole and centre-to-centre spacing, the depth of parallelism etc.;
(6) adopt pneumtic impact wrench that these connecting-rod bolts are pulled down;
(7) device surface is carried out boring, the plane on this connecting rod cap that this device surface is with the head of these connecting-rod bolts contacts, the roughness requirement of recovery device face;
(8) clean this gonnecting rod body and this connecting rod cap, remove surface and iron filings inside holes and greasy dirt;
(9) will clean this complete gonnecting rod body and this connecting rod cap assembles with another connecting-rod bolts by the pairing mark;
(10) connecting rod that assembles is weighed at weighing instrument, carry out packet marking by the grouping standard.
Embodiment two:
The reproducing method of engine link may further comprise the steps:
(1) use respectively defective on file finishing gonnecting rod body and the connecting rod cap toothed surfaces, this defective comprises collide with high point, the burr etc. on the profile of tooth;
(2) take original profile of tooth as benchmark, adopt the broaching processing mode, remove a processing capacity in original profile of tooth, thereby repair the defectives such as colliding with on the profile of tooth, wearing and tearing, and be the follow-up rational allowance of big end hole processing reservation;
(3) gonnecting rod body and the connecting rod cap that will finish the profile of tooth reparation with connecting-rod bolts are assembled together;
(4) on forcing press, the microcephaly hole lining of this connecting rod is taken out, this microcephaly hole bottom outlet is carried out deburring, cleaning after, with another lining in forcing press is pressed into this microcephaly hole;
(5) adopt jig boring machine respectively the big end hole of the lining in this microcephaly hole and this connecting rod to be processed, recover the relative dimensions precision in this crank pin end pore and microcephaly hole and centre-to-centre spacing, the depth of parallelism etc.;
(6) this crank pin end pore is carried out honing, improve the roughness of this big end hole;
(7) adopt torque wrench that these connecting-rod bolts are pulled down;
(8) device surface is carried out drilling, the plane on this connecting rod cap that this device surface is with the head of these connecting-rod bolts contacts, the roughness requirement of recovery device face;
(9) clean this gonnecting rod body and this connecting rod cap, remove surface and iron filings inside holes and greasy dirt;
(10) will clean this complete gonnecting rod body and this connecting rod cap assembles with another connecting-rod bolts by the pairing mark;
(11) connecting rod that assembles is weighed at weighing instrument, carry out packet marking by the grouping standard.
The reproducing method of the engine link that the embodiment of the invention provides has recovered the existing product precision of connecting rod and can guarantee that connecting rod works reliably, has realized the again manufacturing to the old connecting rod of engine.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the reproducing method of engine link is characterized in that, may further comprise the steps:
(1) uses respectively defective on dressing tool finishing gonnecting rod body and the connecting rod cap toothed surfaces;
(2) take original profile of tooth as benchmark, remove a processing capacity in original profile of tooth;
(3) gonnecting rod body and the connecting rod cap that will finish the profile of tooth reparation with connecting-rod bolts are assembled together;
(4) the microcephaly hole lining with described connecting rod takes out, described microcephaly hole bottom outlet is carried out deburring, cleaning after, another lining is packed in the described microcephaly hole;
(5) boring processing is carried out in the big end hole of the lining in the described microcephaly hole and described connecting rod;
(6) described connecting-rod bolts are pulled down;
(7) to described connecting rod cap that the head of described connecting-rod bolts contacts on the plane carry out machining;
(8) clean described gonnecting rod body and described connecting rod cap, remove surface and iron filings inside holes and greasy dirt;
(9) will clean complete described gonnecting rod body and described connecting rod cap assembles with another connecting-rod bolts by the pairing mark;
(10) connecting rod that assembles is weighed at weighing instrument, carry out packet marking by the grouping standard.
2. the reproducing method of engine link according to claim 1 is characterized in that, after step (5), the big end hole of described connecting rod is carried out honing.
3. the reproducing method of engine link according to claim 1 is characterized in that, in step (1), described dressing tool comprises oilstone or file.
4. the reproducing method of engine link according to claim 1 is characterized in that, in step (2), adopts milling or broaching to remove a processing capacity on original profile of tooth.
5. the reproducing method of engine link according to claim 1 is characterized in that, in step (5), adopts the twin shaft fine boring machine that the lining in the described microcephaly hole and the big end hole of described connecting rod are processed simultaneously.
6. the reproducing method of engine link according to claim 1 is characterized in that, in step (5), adopts jig boring machine respectively the lining in the described microcephaly hole and the big end hole of described connecting rod to be processed.
7. according to claim 5 or the reproducing method of 6 described engine links, it is characterized in that, in step (7), described machining comprises boring or drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310225748.7A CN103317296B (en) | 2013-06-06 | 2013-06-06 | The reproducing method of engine link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310225748.7A CN103317296B (en) | 2013-06-06 | 2013-06-06 | The reproducing method of engine link |
Publications (2)
| Publication Number | Publication Date |
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| CN103317296A true CN103317296A (en) | 2013-09-25 |
| CN103317296B CN103317296B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310225748.7A Expired - Fee Related CN103317296B (en) | 2013-06-06 | 2013-06-06 | The reproducing method of engine link |
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Cited By (3)
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| CN104759840A (en) * | 2015-03-12 | 2015-07-08 | 中国人民解放军装甲兵工程学院 | Processing technique of remanufactured connecting rod |
| CN105312832A (en) * | 2015-11-26 | 2016-02-10 | 甘肃酒钢集团西部重工股份有限公司 | Laser remanufacturing method for scraper bar |
| CN106363341A (en) * | 2016-11-14 | 2017-02-01 | 张家港清研再制造产业研究院有限公司 | Engine connecting rod repairing method |
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| CN104759840A (en) * | 2015-03-12 | 2015-07-08 | 中国人民解放军装甲兵工程学院 | Processing technique of remanufactured connecting rod |
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| CN106363341A (en) * | 2016-11-14 | 2017-02-01 | 张家港清研再制造产业研究院有限公司 | Engine connecting rod repairing method |
| CN106363341B (en) * | 2016-11-14 | 2019-01-01 | 张家港清研再制造产业研究院有限公司 | A kind of engine link restorative procedure |
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| CN103317296B (en) | 2016-01-20 |
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Effective date of registration: 20210310 Address after: 261061 Shandong city in Weifang province Fu hi tech Industrial Development Zone, East Street No. 197 Patentee after: Weichai Power Co.,Ltd. Address before: No. 197, Fushou East Street, high tech Development Zone, Weifang City, Shandong Province, 261061 Patentee before: WEICHAI POWER (WEIFANG) REMANUFACTURING Co.,Ltd. |
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Granted publication date: 20160120 |